Re: MicroSim 8.0 precision warning

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Marco,

Big Thanks for sharing this bit of info... If I get some time this weekend,
I'll try some similar simple
models, compare, and correct. Interesting we haven't noticed this before. I
wonder what type of impacts this
would have on some of the various models we've run in the past?

Take care,
Bart

Tesla list wrote:

> Original poster: "Marco Denicolai by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <Marco.Denicolai-at-tellabs.fi>
>
> Hello all.
>
> If you are using MicroSim v 8.0 for your simulations, I would like to
warn you
> about an issue I noticed when simulating TC primary, secondary and
> interactions.
>
> Namely, the resonance frequencies displayed in the transient analysis were
> WRONG! I reduced the circuit to one capacitor and one inductor: then it
should
> have been
>
> f = 1/( 2 PI sqrt(L*C))
>
> but MicroSim made a big error (5 - 10%) on the time scale: displayed
frequency
> was WRONG.
>
> I had the option RELTOL set to 0.001 (the default). Setting RELTOL to 0.00001
> made a very big change and displayed the CORRECT frequency. Therefore, check
> your RELTOL and correct it accordingly to get consistent results.
>
> Regards